using System;
using System.Text;
using System.Data;
using System.Collections;
using System.Collections.Generic;

using Framework;

namespace SchemaMonitor
{
    //Table-Mapping Class (Customisable half)
    public partial class CBook
    {
        #region Constants
        #endregion

        #region Constructors (Public)
        //Default Connection String
        public CBook() : base() {}

        //Alternative Connection String
        public CBook(CDataSrc dataSrc) : base(dataSrc) {}
        
        //Hidden  (UI code should use cache instead)
        protected internal CBook(int bookId) : base(bookId) {}
        protected internal CBook(CDataSrc dataSrc, int bookId) : base(dataSrc, bookId) {}
        protected internal CBook(CDataSrc dataSrc, int bookId, IDbTransaction txOrNull) : base(dataSrc, bookId, txOrNull) { }
        #endregion

        #region Default Values
        protected override void InitValues_Custom()
        {
			_bookCreated = DateTime.Now;
            //_sampleDateCreated = DateTime.Now;
            //_sampleSortOrder   = 0;
        }
        #endregion
        
        #region Default Connection String
        protected override CDataSrc DefaultDataSrc()  { return CDataSrc.Default;  }
		#endregion

		#region Properties - Relationships
		//Relationships - Foriegn Keys (e.g parent)

		//Relationships - Collections (e.g. children)
		public CSectionList Sections { get { return CSection.Cache.GetByBookId(this.BookId); } }
		protected CSectionList Sections_(IDbTransaction tx) { return new CSection(DataSrc).SelectByBookId(this.BookId, tx); } //Only used for cascade deletes

		#endregion

		#region Properties - Customisation
		//Derived/ReadOnly (e.g. xml classes, presentation logic)
		public int SectionCount { get { return Sections.Count; } }
		public string NameAndCount { get { return Framework.CUtilities.NameAndCount(BookName.Length == 0 ? "..." : BookName, Sections); } }
		#endregion

		#region Save/Delete Overrides
		//Can Override base.Save/Delete (e.g. Cascade deletes, or insert related records)
		public override void Delete(IDbTransaction txOrNull)
		{
			//Use a transaction if none supplied 
			if (txOrNull == null)
			{
				BulkDelete(this);
				return;
			}

			//Cascade-Delete (all child collections) 
			this.Sections_(txOrNull).DeleteAll(txOrNull);

			//Normal Delete 
			base.Delete(txOrNull);
		}

		#endregion

		#region Custom Database Queries
		//(Not normally required for cached classes, use list class for searching etc)
		//For Stored Procs can use: MakeList (matching schema), or DataSrc.ExecuteDataset (reports etc)
		//For Dynamic sql, can use: SelectSum, SelectDistinct, SelectCount, SelectWhere (inherited methods)
		#endregion

		#region Searching (Optional)
		//For cached classes, custom seach logic resides in static methods on the list class
		// e.g. CBook.Cache.Search("...")

		//See also the auto-generated methods based on indexes
		//' e.g. CBook.Cache.GetBy...
		#endregion

		#region Caching Details
		//Cache Key
		internal static string CACHE_KEY = typeof(CBook).ToString();    //TABLE_NAME

        //Cache data
        private static CBookList LoadCache()  {   return new CBook().SelectAll();   }
        //Cache Timeout
        private static void SetCache(CBookList value)
        {
            if (null != value)  
                value.Sort(); 
            CCache.Set(CACHE_KEY, value);    //Optional parameter can override timeout (otherwise uses config-settings, which default to 3hrs)
        }
        //Helper Method
        private CBook CacheGetById(CBookList list)  { return list.GetById(this.BookId);    }
        #endregion

        #region Cloning
        public CBook Clone(CDataSrc target, IDbTransaction txOrNull) //, int parentId)
        {
            //Shallow copy: Copies the immediate record, excluding autogenerated Pks
            CBook copy = new CBook(this, target);

            //Deep Copy - Child Entities: Cloned children must reference their cloned parent
            //copy.SampleParentId = parentId;

            copy.Save(txOrNull);

            //Deep Copy - Parent Entities: Cloned parents also clone their child collections
            //this.Children.Clone(target, txOrNull, copy.BookId);

            return copy;
        }
        #endregion

        #region ToXml
        protected override void ToXml_Custom(System.Xml.XmlWriter w)
        {
            //Store(w, "Example", this.Example)
        }
        #endregion
    }
}